Joab Hookmaster, Manual

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3. Use the UP/DOWN arrow buttons to select the desired function.
4. Press the OK button.
Background Light
The background light for the user interface can be adjusted as required. This function allows the
user to quickly adjust the background light so that it is possible to read the display, when for
example there is a lot of sun shining on the display.
To adjust the background light simply press the OK button with a short press repeatedly to
switch between 100%, 20%, and 0% background light.
The display will automatically turn off whenever the hydraulic pump is off. It will only remain on if
there is a warning to display, as listed under
"Warnings" below.
Warnings
The user interface will display warnings whenever the hydraulic pump is not in operation. These
warnings display an icon indicating the following states:
Icon Meaning
The hydraulic lock is open.
The safety hook is open.
Table 3: Warning icons on the display
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Operation – Electrical Systems | CBW controller
Hookmaster manual: 13293 Edition 6 | 2021-02-22